Have you ever wanted to grab a screenshot from your Java application? Here's a quick Java tutorial on how to grab a screenshot and save it to a JPEG and PNG file. This shows how to use the Robot class to capture the screen image and the ImageIO API to save it as a JPG and PNG.

First, we need to determine the size of the screen and create a rectangle with the screen dimensions. We can query the toolkit to determine the size of the screen. In our example, we are grabbing the entire screen. You can also use this same method to grab the contents of a window or a specific screen rectangle.